Add WireGuard TUI implementation

- Add Go TUI with bubbletea for WireGuard management
- Implement client CRUD operations with QR code generation
- Add configuration and validation modules
- Install/update scripts for client setup
- Update Makefile to build binaries to bin/ directory
- Add .gitignore for Go projects

AGENTS.md

@@ -1,22 +1,14 @@
 # Agent Instructions
 
+**IMPORTANT**: All agents MUST read `.agent/AGENTS.md` for project-specific instructions before starting work.
+
+## Project Overview
+
 This project uses **bd** (beads) for issue tracking and **Gitea** for external issue tracking.
 
-## Gitea Issues Workflow
-
-When asked to work on Gitea issues:
-1. Read issue via API: `curl -s "https://gitea.calmcacil.dev/api/v1/repos/{owner}/{repo}/issues/{number}"`
-2. Analyze requirements and scope
-3. Create task list with `todowrite` for multi-step work
-4. Implement fix following existing patterns
-5. Commit with `Closes #{number}` in message (auto-closes issue)
-6. Push to remote
-
-See `GITEA_ISSUES.md` for detailed workflow.
-
-## Beads Workflow
-
-Run `bd onboard` to get started with beads.
+- **Primary workflow**: Use `bd` CLI for issue tracking
+- **External issues**: Gitea API for external bug/feature tracking
+- **Agent instructions**: `.agent/` directory contains project-specific agent guidance
 
 ## Quick Reference
 
@@ -28,29 +20,9 @@ bd close <id>         # Complete work
 bd sync               # Sync with git
 ```
 
-## Landing the Plane (Session Completion)
+## Documentation
 
-**When ending a work session**, you MUST complete ALL steps below. Work is NOT complete until `git push` succeeds.
-
-**MANDATORY WORKFLOW:**
-
-1. **File issues for remaining work** - Create issues for anything that needs follow-up
-2. **Run quality gates** (if code changed) - Tests, linters, builds
-3. **Update issue status** - Close finished work, update in-progress items
-4. **PUSH TO REMOTE** - This is MANDATORY:
-   ```bash
-   git pull --rebase
-   bd sync
-   git push
-   git status  # MUST show "up to date with origin"
-   ```
-5. **Clean up** - Clear stashes, prune remote branches
-6. **Verify** - All changes committed AND pushed
-7. **Hand off** - Provide context for next session
-
-**CRITICAL RULES:**
-- Work is NOT complete until `git push` succeeds
-- NEVER stop before pushing - that leaves work stranded locally
-- NEVER say "ready to push when you are" - YOU must push
-- If push fails, resolve and retry until it succeeds
+- `.agent/AGENTS.md` - Project-specific agent instructions (READ THIS FIRST)
+- `GITEA_ISSUES.md` - Gitea issue workflow details
+- `README.md` - Project overview and setup